Texas Instruments SN55110AJ, SN75110AJ, SN75110AN, SN75112D, SN75112DR Datasheet
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SN55110A, SN75110A, SN75112
DUAL LINE DRIVERS
SLLS106E – DECEMBER 1975 – REVISED APRIL 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Improved Stability Over Supply Voltage and
T emperature Ranges
D
Constant-Current Outputs
D
High Speed
D
Standard Supply Voltages
D
High Output Impedance
D
High Common-Mode Output Voltage Range
. . . –3 V to 10 V
D
TTL-Input Compatibility
D
Inhibitor Available for Driver Selection
D
Glitch-Free During Power Up/Power Down
D
SN75112 and External Circuit Meets or
Exceeds the Requirements of CCITT
Recommendation V.35
D
Package Options Include Plastic
Small-Outline (D), Package, and Ceramic
Chip Carriers (FK), Standard Plastic (N) and
Ceramic (J) DIPs
description
The SN55110A, SN75110A, and SN75112 dual
line drivers have improved output current
regulation with supply voltage and temperature
variations. In addition, the higher current of the
SN75112 (27 mA) allows data to be transmitted
over longer lines. These drivers offer optimum
performance when used with the SN55107A,
SN75107A, and SN75108A line receivers.
These drivers feature independent channels with common voltage supply and ground terminals. The significant
difference between the three drivers is in the output-current specification. The driver circuits feature a constant
output current that is switched to either of two output terminals by the appropriate logic levels at the input
terminals. The output current can be switched off (inhibited) by low logic levels on the enable inputs. The output
current is nominally 12 mA for the ’110A devices, and is 27 mA for the SN75112.
The enable/inhibit feature is provided so the circuits can be used in party-line or data-bus applications. A strobe
or inhibitor (enable D), common to both drivers, is included for increased driver-logic versatility. The output
current in the inhibited mode, I
O(off)
, is specified so that minimum line loading is induced when the driver is used
in a party-line system with other drivers. The output impedance of the driver in the inhibited mode is very high.
The output impedance of a transistor is biased to cutoff.
The driver outputs have a common-mode voltage range of –3 V to 10 V , allowing common-mode voltage on the
line without affecting driver performance.
All inputs are diode clamped and are designed to satisfy TTL-system requirements. The inputs are tested at
2 V for high-logic-level input conditions and 0.8 V for low-logic-level input conditions. These tests ensure
400-mV noise margin when interfaced with TTL Series 54/74.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1B
1C
2C
2A
2B
GND
V
CC+
1Y
1Z
V
CC–
D
2Z
2Y
SN55110A ...J OR W PACKAGE
SN75110A, SN75112 ...D OR N PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
1Z
NC
V
CC–
NC
D
1C
NC
2C
NC
2A
SN55110A . . . FK PACKAGE
(TOP VIEW)
1B1ANC2Z1Y
2B
GND
NC
CC+
V
2Y
NC – No internal connection
SN55110A, SN75110A, SN75112
DUAL LINE DRIVERS
SLLS106E – DECEMBER 1975 – REVISED APRIL 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
The SN551 10A is characterized for operation over the full military temperature range of –55 °C to 125°C. The
SN75110A and SN75112 are characterized for operation from 0°C to 70°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
T
A
PLASTIC
SMALL OUTLINE
(D)
PLASTIC
CHIP CARRIER
(FK)
CERAMIC DIP
(J)
PLASTIC DIP
(N)
CERAMIC
FLATPACK
(W)
0°C to 70°C
SN75110AD
SN75112D
SN75110AN
SN75112N
–55°C to 125°C SN5510AFK SN55110AJ SN55110AW
The D package is available taped and reeled. Add the suffix R to the device type (e.g., SN751 10ADR).
FUNCTION TABLE
(each driver)
LOGIC
INPUTS
ENABLE
INPUTS
OUTPUTS
†
A B C D Y Z
X X L X Off Off
X XXLOffOff
L XHHOnOff
X LHHOnOff
H H H H Off On
H = high level, L = low level, X = irrelevant
†
When using only one channel of the line drivers,
the other channel should be inhibited and/or have
its outputs grounded.
SN55110A, SN75110A, SN75112
DUAL LINE DRIVERS
SLLS106E – DECEMBER 1975 – REVISED APRIL 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
schematic (each driver)
To Other Driver
Y
Z
GND
B
A
...V
CC+
Bus
...V
CC–
Bus
To Other
Driver
C
D
2.2 kΩ
NOM
V
CC–
Common to Both Drivers
2.2 kΩ
NOM
V
CC+
Pin numbers shown are for the D, J, N, and W packages.
+
–
14
3, 4
10
1, 5
2, 6
7
11
8, 13
9, 12
+
–
–
–
+
+
– –
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